﻿Public Class WebForm1
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

    End Sub

    Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btn_sum.Click
        Dim firstnumber As Integer
        Dim sencondnumber As Integer

        firstnumber = CInt(tb_firstnumber.Text)
        sencondnumber = CInt(tb_secondnumber.Text)

        lbl_result.Text = firstnumber + sencondnumber

    End Sub
End Class